another update to Dockerfile

Dockerfile

@@ -1,12 +1,11 @@
 FROM python:3.9-slim-buster
 
-RUN apt-get update && apt-get install -y nginx
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y nginx
 
 COPY index.html /usr/share/nginx/html/index.html
 
 RUN sed -i 's|root /var/www/html;|root /usr/share/nginx/html;|' /etc/nginx/sites-available/default && \
     nginx -t && \
-    nginx -g 'daemon off;' && \
     nginx -s reload
 
 EXPOSE 80